////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page28.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (Cos 1) (Tan 1) 6 8 2)

Problem:
(= (cdot #[[54 3 2 30 58 68 13 97]
           [17 40 9 36 60 74 42 97]
           [66 3 73 23 10 42 6 17]
           [92 22 27 67 0 97 25 53]
           [81 10 3 94 77 44 71 76]
           [45 17 95 18 56 8 71 83]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]])
   #[[15] [57] [40] [77] [24] [65]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]]
   #[[-52351637360]
     [-79382691278]
     [21407091908]
     [33045445543]
     [-14806177922]
     [31547420533]
     [16977741760]
     [5399814655]])